• 4-Piperidinol,1-(5-bromo-2-pyrimidinyl)-
• 887425-47-0
• C₉H₁₂BrN₃O
• 258.12
• .

• 4-Pyridinecarbonitrile,2-[[3-(hydroxymethyl)phenyl]thio]-
• 888968-35-2
• C13H10 N2 O S
• 0
• .

• 4-Thiazolecarboxylicacid, 2-(4-bromophenyl)-, ethyl ester
• 885278-75-1
• C12H10 Br N O2 S
• 312.18
• .

• 4-Pyrimidineethanol,6-chloro-α-[(3-chloro-1H-1,2,4-triazol-1-yl)methyl]-α-(2,4-difluorophenyl)-5-fluoro-β-methyl-, hydrochloride (1:1), (αR,βS)-rel-
• 848469-29-4
• C₁₆H₁₂Cl₂F₃N₅O.HCl
• 454.67
• .

• 4-Isoxazolepropanoicacid, a-amino-2,3-dihydro-5-methyl-3-oxo-,(aR)-
• 83654-13-1
• C7H10 N2 O4
• 186.17
• .

• 4-Pyridinepropanenitrile
• 84200-06-6
• C8H8 N2
• 132.16
• .

• 4-Pyrimidinecarboxylicacid, 2-(trifluoromethyl)-, methyl ester
• 878745-51-8
• C7H5 F3 N2 O2
• 206.12
• .

• 4-tert-Butyl-1-cyclohexen-1-ylboronic acid
• 850567-91-8
• C₁₀H₁₉BO₂
• 182.07
• .

• 4-Pyridinecarboxylicacid, 2-(acetylamino)-5-bromo-
• 871269-03-3
• C₈H₇BrN₂O₃
• 259.06
• .

• 4-Pyridinecarboxylicacid, 2-amino-5-bromo-, methyl ester
• 882499-87-8
• C₇H₇BrN₂O₂
• 231.04668
• .

• 4-Pyridinecarboxamide,2-(hydroxymethyl)-
• 84589-39-9
• C7H8 N2 O2
• 0
• .

• 4,7,10,12,16,19-Docosahexaenoicacid, 14-hydroxy-, (4Z,7Z,10Z,12E,16Z,19Z)-
• 87042-40-8
• C22H32 O3
• 344.48768
• .

• 4-Acridinecarboxylicacid, 1-chloro-9,10-dihydro-9-oxo-
• 80258-99-7
• C14H8 Cl N O3
• 273.67
• .

• 4-Thiomorpholineethanamine,1,1-dioxide
• 89937-52-0
• C₆H₁₄N₂O₂S
• 178.2526
• .

• 4-Piperidinecarboxylicacid, 1-(4-formylphenyl)-, ethyl ester
• 85345-11-5
• C₁₅H₁₉NO₃
• 261.32
• .

• 4-Thiomorpholinepropanoicacid, 1,1-dioxide
• 849928-19-4
• C₇H₁₃NO₄S
• 207.25
• .

• 4-Thiazolemethanamine,2-(4-methylphenyl)-
• 89152-86-3
• C11H12 N2 S
• 204.29
• .

• 4-Quinolinol,7-methyl-
• 82121-08-2
• C₁₀H₉NO
• 175.18
• .

• 4(1H)-Pyrimidinone,5,6-diamino-1-methyl-
• 824-27-1
• C5H8 N4 O
• 140.14
• .

• 4-Pyrimidinepropanoic acid
• 819850-17-4
• C₇H₈N₂O₂
• 152.15
• .

• 4-Pyrimidinecarboxylic acid sodium salt
• 819850-18-5
• C₅H₃N₂O₂^.Na
• 146.08
• .

• 4-Pyrimidinepropanoicacid, a-methyl-
• 819850-15-2
• C₈H₁₀N₂O₂
• 166.18
• .

• 4(3H)-Pyrimidinone,2-amino-6-methyl-5-(2-propyn-1-yl)-
• 81887-01-6
• C8H9 N3 O
• 163.18
• .

• 4-Piperidinamine,1-(2-pyrimidinyl)-, hydrochloride (1:?)
• 848500-38-9
• C9H14 N4 . x Cl H
• 214.70
• .

• 4-Pyridinecarboxaldehyde,3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]-, hydrate (1:?)
• 853645-22-4
• C8H10 N O6 P . x H2 O
• 200-208-3
• 247.14
• .

• 4-Thiazoleacetic acid,2-amino-a-(methoxyimino)-,2-benzothiazolyl ester, (aZ)-
• 84994-24-1
• C13H10 N4 O3 S2
• 350.44
• .

• 4-Piperidinecarboxylicacid, 1-(5-nitro-2-pyridinyl)-
• 868077-44-5
• C11H13 N3 O4
• 251.24
• .

• 4-(Hexadecylamino)benzylamine
• 84670-96-2
• C₂₃H₄₂N₂
• 346.59
• .

• 4-Pyridinemethanamine,2,6-dichloro-
• 88579-63-9
• C6H6 Cl2 N2
• 177.03
• .

• 4-(2,4-Dichlorophenyl)-1H-pyrrole-3-carbonitrile
• 87388-06-5
• C₁₁H₆Cl₂N₂
• 237.09
• .

• 4-Pyridinecarboxamide,2,6-dichloro-
• 89281-13-0
• C₆H₄Cl₂N₂O
• 191.02
• .

• 4-Amino-6-nitroresorcinol hydrochloride
• 883566-55-0
• C₆H₆N₂O₄^.HCl
• 206.58
• .

• 4-Thiazoleacetic acid,2-amino-a-[[2-(diphenylmethoxy)-1,1-dimethyl-2-oxoethoxy]imino]-,(Z)- (9CI)
• 80542-76-3
• C22H21 N3 O5 S
• 安全数据
• 273.27
• .

• 4-Pyridinamine,2-ethoxy-
• 89943-12-4
• C7H10 N2 O
• 138.17
• .

• 4H-Cyclopentathiazol-2-amine,5,6-dihydro-, hydrochloride (1:1)
• 82514-58-7
• C₆H₈N₂S.ClH
• 176.67
• .

• 4(3H)-Pyrimidinone,2-amino-6-hydroxy-5-nitro-
• 80466-56-4
• C4H4 N4 O4
• 172.1
• .

• 4-Piperidinepropanoicacid, b-amino-1-[(phenylmethoxy)carbonyl]-,ethyl ester
• 886362-29-4
• C₁₈H₂₆N₂O₄
• 334.41
• .

• 4-Pentenoic acid,5-chloro-2-(1-methylethyl)-, (4E)-
• 87953-16-0
• C8H13 Cl O2
• 0
• .

• 4-Thiazoleethanethioic acid, 2-amino-alpha-(methoxyimino)-, S-2-benzothiazolyl ester, (Z)-
• 80756-85-0
• C₁₃H₁₀N₄O₂S₃
• 279-540-6
• 350.45
• .

• 4(3H)-Quinazolinone,3-(2H-tetrazol-5-yl)-, sodium salt (1:1)
• 87693-14-9
• C9H6 N6 O . Na
• 0
• .

• 4-Morpholinepropanamine,a-methyl-N-(3-phenyl-5-isoxazolyl)-N-(phenylmethyl)-
• 86684-57-3
• C24H29 N3 O2
• 0
• .

• 4H,11H-Naphtho[2,1-b]pyrano[3,4-e]pyran-1,11(5H)-dione,4a,6,6a,12,12a,12b-hexahydro-4a,12a-dihydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-4,4,6a,12b-tetramethyl-,(4aR,6aR,12aS,12bS)-
• 89020-33-7
• C28H32 O9
• 0
• .

• 4H-1-Benzopyran-4-one,2-(ethylmethylamino)-7-phenyl-
• 83767-02-6
• C18H17 N O2
• 0
• .

• 4-Pyridinecarboxylicacid, 3-hydroxy-5-(hydroxymethyl)-2-methyl-
• 82-82-6
• C8H9 N O4
• 201-440-8
• 183.16
• .

• 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]phenylacetyl]amino]-7-oxo-,[2S-[2a,5a,6b(S*)]]- (9CI)
• 81482-39-5
• C21H23 N5 O7 S
• 0
• .

• 4-Octen-3-one,4,5,6,7,7-pentamethyl-
• 81786-78-9
• C13H24 O
• 279-826-0
• 196.32906
• .

• 4,6-Methano-5H-benz[h]oxazolo[3,2-a]pyrazino[3,2,1-de][1,5]naphthyridine-7-carbonitrile,1,2,3a,4,4a,6,7,9,10,13,13b,13c-dodecahydro-9-(hydroxymethyl)-11-methoxy-5,12-dimethyl-10,13-dioxo-,(3aS,4R,4aR,6R,7S,9S,13bS,13cS)-
• 82423-05-0
• C22H26 N4 O5
• 426.52
• .

• 4,6-Dimethyl-2(3H)-benzothiazolone
• 80567-67-5
• C₉H₉NOS
• 179.24
• .

• 4-Quinolinecarboxamide,2-butoxy-N-[2-(diethylamino)ethyl]-
• 85-79-0
• C₂₀H₂₉N₃O₂
• 201-632-1
• 343.52
• .

• 4-Thiazolidinone,3-(4-morpholinylmethyl)-5-(3-phenyl-2-propen-1-ylidene)-2-thioxo-
• 86650-16-0
• C17H18 N2 O2 S2
• 0
• .